| Factor | Hazard ratio (95% CI) |
| Stage: localised | 1 |
| Stage: locally advanced | 2.0 (1.5 to 2.7) |
| Stage: advanced | 3.2 (2.5 to 4.3) |
| Performance status 0 | 1 |
| Performance status 1 | 1.1 (0.9 to 1.4) |
| Performance status 2 | 1.5 (1.1 to 1.9) |
| Performance status 3 | 2.1 (1.6 to 2.8) |
| Performance status 4 | 3.6 |
| Potentially curative resection | 0.6 (0.4 to 0.9) |
| Unconfirmed histology | 1.3 (1.0 to 1.5) |